Street-lighting fixture



Filed Deo. 27, 1926 2 sheets-sheet Alwm E Etgmmayr Nov.'5, 1929. A. G. sTElNMAYER STREET LIGHTING FIXTURE y y2 Sheets-Sheet 2 Filed Deo. 27. 1926 Patented Nov. 5, i929 ALwIN-G. stamm/MYER, or Miriwsunnn, wisconsin, AssIGNon, Bfr MESNE Assiemiirnnrs, 'ro LNn'iaArE-RIAL coiarnnv, or souri-i MiiLWAUKEE,v Wrsoonsriv, n. oon- PORATION OE' DELAWARE STREET-LIGHTING FXT'URE Appncauon inea December 27,1926. lseiiainofistgiea.

`which istlie system mostcommonly useda a certain impressed voltage is passed through aseries of lamps, all having the same ainerafre ca Dacit roducinO' a resultant volt` age drop in each lamp and hence the impressed voltage is proportioned to the num- :ber of lamps, and where a large area is to `be illuminated there will necessarily be a klarge number of lamps and hence the iinpressed voltage is relatively high.

Heretofore, the impressed voltage and the number of lamps has been limited by the insulat-ing `capacity of the supporting structure or housing of the lighting fixtures, and this invention hasforone of its objects to provide a lighting xture housing constructed of wet process porcelain to have an insulating capacity sufficient to withstand the necessary 'higher voltages.

As wet process porcelain7 due to its nature, is necessarily a kturned product and is best 'worked' in its dry stage, this invention has as another object to provide an insulator supporting structure so constructed thatit may be turned'from a solid clay; y p

VAnother object of this invention resides plug or block of process 1in the provision of means whereby a socket receptacle and the usual refractor holder and 'shade may beinounte'd in the housing by asingle mounting means so as to reduce the design of theV housing to its simplest form.

A further object of this invention is to Y devise means for dead endingfthe. leads or conclosed inveiitionvmay be made-as com erwithin the'scope vof the claims.A f

In the accompanying drawings, "I'have illustrated three complete examples `of the physical embodiment of my invention constructed according to the'b'estinode havefsoffar .de-

visedfor the practical ,application ofthe principles thereof(q and in which: i f Y Figure l is aview, partlyzineelevation'and partly in section,- illustrating-a2 streetilighting y I Hf. l'. y" Figure 4 is -a sectionalviewlsimilar to Figanother modified Vform ofA my invention.

Referring now more particularly -fto the accompanying drawings, fin which like -numeralsz designate like p arts throughoutv fthe `several views., numeral 6.designates;aic11p shaped housing or body portion ofrla'jlighting'iixture .formed of ywetproc'ess porcelainl by turning thek same` from asolidplug. or

-blockof process-clay. VA hoodori-ca'nopy .60 fixture v constructed'. according to.;my inveny tion;

V.ure l ofa slightlyvinodiiednform ofmyinvenytion,and 'l y r "f 'I i 'Figure 5 4is a vsectional view yillustrating' Tsuitably securedto the upperfportion off the-housing by .screwsior :like means J8 provides means forsupporting thelfixture in any 'desired manner. Y i y Lead wires or conductors `9 and 10-enter thehousingxthrough `apertures i11 kand '12, ret .-spectively, to .be connected'with the usual terminals -ofv-a- Areceptacle :13 adjustably mounted within they housing in" ai.: ma'nnerfl to be later describedyasocket 13 beingremovably connected with thereceptacle` :The lead Y .wiresw9 and f1.0 yarepassedthroughboites '14 vand 15 -forined iin anfannular frib '-16 and twisted about each.othertowsecurely dead end sthe-sameto the `housing before being,

passed through` apertures .Jil .and 12,1as best illustrated in Figure` The meansifor adjiistablyy mounting the reoeptacleilwithinfthe housingcincludes a pair otbracket n ienibers'17 bent ofapproximately right angular `shape with their lateral portions connected with the receptacle at diametrically opposite points by screws or other means 18. The'downwardly extended or vertical portions 19 of the members 17 each have j a laterally and outwardly extended stud 2O formed at their lower extremity to ride in the longitudinal slot 21 of the vertical portion 22 ofthe adjacent one of a pair of supporting frames 23. A bolt member 24 passes through an aperture in the portion 19 and through slot 21 in each supporting frame,

between the head of which anda nut threaded thereon the portion 19 and the portion 22 are clamped together, the bolt and the laterally extended stud 2O with which it cooperates -beingslidable 'in the-slot 21.

f "It will be understood that the construction above described is duplicated on diametrically opposite sidesiof the lamp structure,

and that the vdescription of one will s'uflice for the other.

Each supporting frame 23'has a pair of voppositely extendingportions 25 which extendcircumferentially about the inner periphery of the housing 6 for a distance of substantially one-eighth'` of the circumference thereofand each portion carries at the upper :side of its outer extremity a projection 26 extending-radially inward of the housing 6, each projection being slotted, as at 27 for "the purpose vlater described (see'Figure V- The supporting frame 23 is readily removably secured to the housing 6 by studs 2S Vwhich Vpass through' andare freely rotatable in apertures in the outer extremity-of each portion 25 and'inapertures 29 in the lower portion of the insulator housing 6. Each stud 28is formed with aV shoulder 30 which engages the inner side of the portion 25 through which it is passed, and is held against to `be rotated from the outside of the housing longitudinal movement by a knurled head 31 whichis secured'to the outer end of the stud by ac otter pin `or other suitable means 32. Thus 1t will `be lseen that `the studs are free j by manipulation ,of the head 31 and that the Ainwardly Aof the shoulder 30 is threaded to supporting frame .is secured to the houslng 6." Y

That portion ofthe stud 28 which extends receive a binding member 33 which is cut away on each side at its upper' end to ride within the slot 27 in the member 26. The lowerend of each member 33 is bent out- :wardly to engage the upper inner periphery Yof arefractor `holder34 and a reflector 35. It willbe readily apparent that the stud 28 may vbe threaded into-the member'33 to rigidly vbind the refractor Vholder Vand reflector together and to thehousing.

"; In Figure ".4, have illustrated a modified yform .of my invention in which the means for adjustably mounting the receptacle includes a head member 36 carrying a threaded downwardly extending stud 37, cemented in the upper portion of the housing.. A substantially U-shaped supporting str1p738 has its upper or medial portion threaded onto the stud 37 and its lower or outer end secured to the receptacle by screws 18, a locking nut 3 9 securing the member 37 in any desired position. This View also illustrates a modified member 41 which is cemented into a pocket" in the upper portion of the housing as illustrated. Another means for deadendrng the line is also depicted in this view in whic a tubular plug member 42 is cemented in anf aperture in the lower portion of the housing, the line wire being passed through the bore of the plug member and being wound about the outer end oit the same whichis 'grooved, as at 43.

y From the foregoing description taken in connection with the accompanying drawing it will be readily apparent to'those skilled in the art to which an invention of this character appertains that I have provided an insulating housing for lamp fixtures which is extremely simple of construction-and which may be formed of wet processporcelain by turning the same from a solid block of process clay. Y

lVhat I claim asmy invention is :Y Y

1. A device of the character described, comprising a housing, a socket receptacle adapted to be positioned within the housing,`

a bracket member extended downwardly from the receptacle, a supporting framea means for longitudinally adjustably connecting the bracket member' lwith the supporting frame, alight modifier, and means for clampframe, said last-mentioned means passing through an Vaperture in the housing and securing the supporting frame within the housing.

2. A lamp structure, comprising an in-1 verted cup-shaped insulator having a plurality of circumferentially spaced apertures adjacent its lower edge, supporting frames each having a correspondingly spaced opening adjacent each end, a forked projection on eachend of the frame adjacent the respective opening, a clamping lug slidable in the fork of each projection and having'a screw threaded aperture, a light modifier adapted to be means adapted to pass through the aligned ing the light modifier to the supporting Y `engaged Vby the lugs, and screw threaded openings in the insulator and frames and threaded into the threaded apertures Whereby the insulator, frames and light modifier are detachably secured together.

3. A light supporting structure comprising an inverted cup-shaped housing having spaced apertures through its Walls adjacent the lower portion thereof, a socket receptacle, and a light modilier, a supporting frame, means adjustably mounting the socket receptacle from the supporting frame, clamping means engageable With the light modifier to mount the same, and means passed through the apertures in the housing to secure the supporting frame therein and engage the clamping means with the light modifier.

4. A light supporting structure comprising a housing, a socket receptacle and a light modifier, means for mounting the receptacle and light modifier Within the housing and including a substantially inverted T-shaped supporting frame, transversely extending slotted projections at the ends of the T and clamping means carried by the projections and adapted to ride in said slots to engage the light modifier and support the same.

5. In a lighting ixture of the character described, a housing having all portions thereof annular and symmetrical about its central longitudinal axis and turned from a solid plug of Wet process clay, and means for anchoring a line Wire thereto.

In testimony whereof, I hereunto aiX my signature.

ALWIN Gf STEINMAYER. 

